Flame arc-lamp.



G. A. B. HALVOR$ON, JR. FLAME ARC LAMP.

APPLICATION FILED DEC. 27, 1909.

M hf m J m E n r 4n 0 O 2% u Vm TO Mm OW fl s ma .s M W H Witnesses: 3

THE NORRIS PETERS CO4. PHOTO-LITHCL, WASHINGTON D, C.

G. A. B. HALVORSON, JR.

Patented Nov. 24, 1914.

4 SHEBTSSHBBT 2.

Witnesses: Inventor Cromwell fLB. Halvorson J12, 1.226; W b M5 Hlsfittorney.

THE NORRIS PETERS Coy. PHOTO LIN-40.4 WASHING/ON D. Cv

C. A. B. HALVORSON, JR. FLAME ARC LAMP.

APPLICATION FILED DEC. 27, 1009.

1,1 18,414. Patented Nov. 24, 1914.

4 SHEBTS-SHEET 3.

Witnesses Q Inventor: Cromwe||.7T.B.Halvorson Jr.,

/ i His fittorney.

THE NORRIS PETERS 50.. PHOTUYLITHO, WASHINGTON. D l

U. A. B. HALVORSON, JR. FLAME ARC LAMP.

APPLICATION FILED DEC. 27, 1909.

1,1 18,414, Patented Nov. 24, 1914.

4 SHEETS-SHEET 4.

' Fig. 9. Fig. 7. 1

m 1/ 1 I /z I 7 Q 6 a g 5 nu: E

Witnesses: 4 Inventor:

CromwellflBHalvorson 4 %1 bLJ H is. JPciorneg THE NORRIS PETERS CORHOTO-LITHQ, WASHING roAf. D. C.

UNITED STATES PATENT OFFICE.

CROMWELL A. B. HALVDRSON, JR, 0F SAUGUS, MASSAGHUSETTS, ASSIGNOR TOGENERAL ELECTRIC COMPANY GORPORATION OF NEVJ YORK.

FLAME ARC-LAMP.

Application filed December 27, 1909.

- fication.

This invention relates to electric arc lamps, and its object is toprovide a lamp of the flaming or luminous arc type which will burn for amuch longer time than the ordinary arc lamp, and therefore require lessattention from the trimmers.

A further object is to simplify the mech anism and secure an even andautomatic feeding of the electrodes.

My lamp is of that type in which the electrodes are inclined downwardlytoward a common meeting point just below an economizer. The are isstruck by separating the tips of the electrodes in lateral direction.The electrodes are suspended from holders which slide freely on inclinedguide rods and hung on the arms of a vertically-movable traveler.

The positive electrode comprises two electrode members converging towardeach other, each member comprising one or more carbons, all of thepositive carbons being located in the same plane. The feed is regulatedby the burning away of the contiguous tips of the adjacent carbons ofthe two positive electrode members. The negative carbons are preferablyarranged par allel with each other in a plane inclined toward that ofthe positives.

' In the accompanying drawings, Figure 1 is a perspective view of mylamp taken on the side of the negative electrode; Fig. 2 is aperspective taken on the side of the positive electrode; Fig. 3 is aside elevation showing a portion of the arc-striking mechanism; Fig. 4is a side view at right angles to Fig. 3; Fig. 5'is a plan view with theelectrodes in section, showing the arc, striking slide; Fig. 6 is a sideelevation of said mechanism in the position it occupies when the are isstruck, and the lamp is burning; Fig. 7 is a bottom plan view of theeoonomizer showing the lower ends of the electrodes; Fig. 8 is aperspective View of the top plate 4 and the mechanism located im-Specification of Letters Patent.

Patented Nov. 24, 1914.

Serial No. 534,954.

mediately above the same for moving one set of electrodes laterally, andFig. 9 is a side elevation showing the frame of the lamp.

The frame of the lamp comprises a canopy 1, below which is supported atop plate 2. Two parallel hollow columns 3 eX- tend downwardly from thecanopy to the platform 4, which is annular to afford a support for theeconomizer 5, whose flange rests on the platform. The hollow columnsserve as chimneys or fiues to carry off the fumes of the are from thechamber in the economizer. A central vertical post 7 extends from thetop plate downwardly toward the platform, as do also three guide rods 8grouped around the center post and converging at the lower ends, wherethey are secured in a cross bar 9 attached by arms extending therefromto the chimney columns. On the center post 7 slides a travelerconsisting of a block 10 having a central hole fitting the post easily.Three arms 11 project radially from this block, terminating in proximityto the guide rods. On each arm is mounted a carrier 12 which moves alongand is guided by one of the rods 8 and is, at the same time, adapted tomove freely in and out along said arm. From each carrier, and suitablyinsulated therefrom depends a holder 13 for the electrodes. I prefer tosupport two or more carbons in each holder, thus constituting my lamp amultiple carbon lamp; but ifthere is only one carbon in each positiveelectrode holder, the negative electrode holder would carry two carbons,and the lamp would still be a multiple carbon lamp. In the drawings Ihave shown four positives and four negatives, but this number is notessential and may be varied at will. Assuming, however, that this is thenumber selected for use, the four positives will be divided equallybetween two of the holders, while the four negatives will be all held inthe third holder; the positives being arranged in one plane and thenegatives in another plane inclined to that of the positives.

The lower ends of all the electrodes pass through apertures in guideplates resting on the top of the economizer. One of theseplates.preferably the one for the positives-is stationary, while theother is movable in a horizontal-plane toward and away from thestationary one. The two pairs of convergmg posltlve carbons 14 passthroughthe apertures in their guide plate 15 and the tips of theadjacent carbons in the two pairs abut in the chamber of the economizer.

As both pairs are connected to the single traveler 10, neither pair canslip past theother, and thus their arcing ends rema1nstationary, andserve to support the traveler and the four negative carbons16 suspendedtherefrom and depending through the @1361;

tures in the'movable guide plate 17. The

downward feed of both electrodes" thus depends upon the burning awayo'fthe abut ting tips of the two adjacent carbons of the two positiveelectrode members The movable guide plate 17 is preferably provided witha pair' of upwardly-turned;

ears 18 between which is journaled a roller 19 to support the plate onthe upper surface of theeconomizer andiit'acilitate its move ments'l Theside edges of the plate "are turned upwardly to 'stifien 1t, and'areconnected by "arms-20' with downwardly 'emtending rock arms 21 on ashaft '22 journaled ina frame23rising from thplatform '4. 'A lever 2% isc'onnectedwith' one of said'arrns by means of which the mo'v able guideplate can be slid to "and'fro over theeconomizer and thuscarrythe tipsof the" negative electrode away from and toward the-positive,'in ahorizontal direction: A liftingrod'25 i's pivotedto'the lever'andronnect's at its upper end with the'plunger cores 26*of the lampmagnets 27. A dash pot 28 dampensthe movements of said cores, as usual.

When the 3 lamp" is not burning, the cores" are down and-the tips-6fsome or all: the

as the current 'c omes on' again.

By using multiple sets of electrodes, for? example threeas illustrated,each carbon" in one set standing opposite a corresponding: carbon in theother, the arc is enabledto shift from one pair or p'osi'tiye' andnegative carbons to another depending upon the relative distancesbetween the'sever'al pairs of carbons, the arcnaturally seeking thetwowhich "are nearest together. In this" way, the four pairs herenishownbyivay bf'exam" ple are burned intermittently"'lout "notsimultaneouslyfso that the life of the" theservices of a lamp trimmer.vantages of this for mumcipal llghting' are is four times as long asthat of one having but a single pair of carbons." By multiplying thenumber of carbons, which can bereadily done by changing the holders andthe guide plates to correspond, the lamp may be made to burn for quite along time without requiring The adlamp apparent.

For "convenience of description, I have termed the carbons ll positiveand those numbered 16 as negative; but it is evident thatthe'polaritie's may be reversed, if de- SlI'd, ii p In the foregoing"description I have spoken of the rods which compose theelectrodes ascarbonsfibut it is manifest that one or both electrodes may be composedof rods of other suitable material, the term carbon being in this caseintended to include any such material.

*hat I claim as he'wahdfdesire to secure by Letters Patent of the UnitedStates, is,

1. In an arc lamp, 'a group of two or more parallel carbons constituting'-'an electrode of one' )olarity,' arranged in one plane; two electrodemembers each or which comprises one or more carbons of the opposite'ipolarity locatedin another plane which converges toward the plane'of saidgr0up',"the' two electrodemembers converging toward" and abuttingagainst each other, and means for causing all ofsaid carbons' to movealong their axes in stepil 4 2. In an arc lamp, twoelectrodes, onecomposed of a plurality of parallel carbons arranged with their tips ina straightl ine and'the other composed of'two' electrode members eachcomprisingone or more can bons, the 'two' "members" being inclinedtoward and-abutting against each other in the common plane "of saidmembers and with their tips. also'in a straight line, the two linesbeing parallel, and means for causing all of the carbons to -move alongtheir arms in steplff 3. ln'an are lam'p',"a group of two or moreparallel carbonsof one po1arity'ar-' rangedin one plane, twoelectrodemembers each of which comprises one or 'inorecarbons of theoppositepolarity, all locatedin another plane which converges toward theplane'of said group, the-twoelectrode members of one polarity convergingdownwardly toi'vard and"abutting against eaehother, and lneag sror mechhically cennecting together all of the carbons.

1. In an arc lamp,the c'ombinatio'nwith one set of parallel carbonsofonepolarity all inoneplane, of another set of carbons of the]: oppositepolarity equal in number "to these in the firstset and 111111 anotherplane" and f-divided into t'w ofelectrode "members incliiied' toward"and" abutting against each other, the planes of the two sets of carbonsIn Witness whereof, I have hereunto set converging downwardly and eachelectrode my hand this seventeenth day of December, member comprisingone or more carbons, 1909.

means for moving one set of carbons lat- CROMWELL A. B. HALVORSON, Jrerally away from the other set in order to lVitnesses:

strike the arc, and means for moving all of JOHN A. MoMANUs, J12,

said carbons along their axes in step. CHARLES A. BARNARD.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents,

Washington, D. 0.

